Christoph Lameter wrote:
> On Tue, 15 Oct 2013, Kirill A. Shutemov wrote:
> 
> > Feel free to propose a patch. I don't see much point.
> 
> Right now you are using a long to stand in for a spinlock_t or a pointer
> to a spinlock_t. An #ifdef would allow to define the proper type and
> therefore the compiler to check that the ptl is correctly used.

You should not use it directly anyway: page->ptl is not there at all if
USE_SPLIT_PTE_PTLOCKS is 0. Compiler checks limited to few helpers and use
a kbuild hack is overkill to me.

-- 
 Kirill A. Shutemov
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